A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. Gastropods that naturally lack a shell, or have only an internal shell, are mostly called slugs, and land snails that have only a very small shell are often called semi-slugs.
The gastropods, commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.
Sea snail is a common name for slow moving marine gastropod molluscs usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the absence of a visible shell.
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung. Most feed on algae, but many are detritivores and some are filter feeders.
Conilithes is an extinct genus of sea snails, marine gastropod mollusks in the family Conidae, the cone snails.
Terrestrial molluscs or land molluscs (mollusks) are an ecological group that includes all molluscs that live on land in contrast to freshwater and marine molluscs.
Conilithes allioni is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes brezinae is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes brocchii is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes brockenensis is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes canaliculatus is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes eichwaldi is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes exaltatus is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes lyratus is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes oliveri is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes rivertonensis is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes sceptophorus is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes suteri is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes tahuensis is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
Conilithes wollastoni is an extinct species of sea snail, a marine gastropod mollusk, in the family Conidae, the cone snails and their allies.
